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Analysis of MMP-9 and TIMP-2 gene promoter polymorphisms in individuals with hypodontia.
- Source :
-
Brazilian dental journal [Braz Dent J] 2005; Vol. 16 (3), pp. 231-6. Date of Electronic Publication: 2006 Jan 12. - Publication Year :
- 2005
-
Abstract
- Hypodontia, the congenital absence of one or a few teeth, is one of the most common developmental alterations of human dentition. It may cause masticatory and speech dysfunctions and create esthetic problems with orthodontic and prosthetic implications. MMP-9 is an important member of the matrix metalloproteinase (MMP) family that participates in remodeling of extracellular matrix during tooth development. A C-to-T base exchange at position -1562 creates two different alleles, and the CT and TT genotypes promote high activity of the MMP-9 gene promoter. Tissue inhibitor of metalloproteinase-2 (TIMP-2) regulates the activity of MMPs in the extracellular matrix and is co-expressed with gelatinases A (MMP-2) and B (MMP-9) during mouse tooth morphogenesis. A polymorphism in the TIMP-2 gene promoter at position -418 has been found in a Sp-1 binding site. In this study, the association between these DNA polymorphisms and hypodontia has been investigated. The significance of differences in frequencies of polymorphisms in control and test groups was assessed by Chi-square test (p<0.05). Data suggested that MMP-9 gene promoter polymorphism was not associated with hypodontia. The high frequency of GG genotype in the TIMP-2 gene promoter showed that this site was unsuitable for studies of DNA polymorphism-disease associations in the studied population.
- Subjects :
- Alleles
Anodontia genetics
Cytosine
Extracellular Matrix enzymology
Gene Frequency genetics
Guanine
Humans
Matrix Metalloproteinase 2 genetics
Odontogenesis genetics
Polymerase Chain Reaction
Polymorphism, Single Nucleotide genetics
Terminal Repeat Sequences genetics
Thymine
Anodontia enzymology
Matrix Metalloproteinase 9 genetics
Polymorphism, Genetic genetics
Promoter Regions, Genetic genetics
Tissue Inhibitor of Metalloproteinase-2 genetics
Subjects
Details
- Language :
- English
- ISSN :
- 1806-4760
- Volume :
- 16
- Issue :
- 3
- Database :
- MEDLINE
- Journal :
- Brazilian dental journal
- Publication Type :
- Academic Journal
- Accession number :
- 16429190
- Full Text :
- https://doi.org/10.1590/s0103-64402005000300011